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A) Structure of the ligands used in this study. B) Structure of the [Ni2L3]4+ cylinder of ligand L. [35] L′, [36] and L′′ [37] form analogous cylinders that bear further aryl rings on their external surfaces. C) View of the crystal structure of a cylinder bound in an RNA 3‐way junction cavity from PDB 4JIY [32] showing its unique binding.
